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Dependency injection and inversion of control and library for simple service handling

Project description

# IOCynergy
Python module for IOC container using dependency injection (uses python 3+ type hints)

## Easy way to initialize your services
from cynergy import container

class TestClass:

class ParentClass:
def __init__(self, test_class: TestClass):
self.test_class = test_class

instance = container.get(ParentClass) # Returns TestClass initialized as singleton

print(type(instance)) # ParentClass
print(type(instance.test_class)) # TestClass

## Access to your configuration from any service
from cynergy import container
from cynergy.config import Config, MemoryConfig
from cynergy.attributes import arguments

class DbConnector:
def __init__(self, db: str, host: str):
self.db = db = host

"db_name": "LocalDbName",
"hostname": "localhost"

instance = container.get(DbConnector)

print(instance.db) # LocalDbName
print( # localhost

** You can implement your own configuration provider (for exmaple you can create DbConfigProvider which provides your settings from the db)

## Manually register special types

from cynergy import container

class Original:

class Other:

container.register_class(Original, Other)

instance = container.get(Original)

print(type(instance)) # Other

## Register collection of services
from typing import List
from cynergy import container

class HandlerBase:

class SomeHandler1(HandlerBase):

class SomeHandler2(HandlerBase):

class SomeService:
def __init__(self, handlers: List[HandlerBase]):
self.handlers = handlers

container.register_many(HandlerBase, [SomeHandler1, SomeHandler2])

instance = container.get(SomeService)

print(type(instance.handlers)) # list
print(type(instance.handlers[0])) # SomeHandler1
print(type(instance.handlers[1])) # SomeHandler2

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